/*
 * Created on May 4, 2006
 *
 * Copyright (c) 2005 Peter Johan Salomonsen (http://www.petersalomonsen.com)
 * 
 * http://www.frinika.com
 * 
 * This file is part of Frinika.
 * 
 * Frinika is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.

 * Frinika is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with Frinika; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package com.petersalomonsen.mediacast.client;

import java.io.InputStream;
import java.net.URL;


/**
 * @author Peter Johan Salomonsen
 */
public class FindHeader {

    static final int BUFFER_SIZE=8192;
    
    public static byte[] getHeader(URL url) throws Exception
    {
        InputStream stream = url.openStream();
        
        byte[] b = new byte[BUFFER_SIZE];
        
        while(stream.available() < BUFFER_SIZE)
            Thread.yield();
        
        stream.read(b);
        stream.close();
        
        stream  = new URL("http://localhost:1234").openStream();
        byte[] b2 = new byte[BUFFER_SIZE];

        while(stream.available() < BUFFER_SIZE)
            Thread.yield();
        
        stream.read(b2);
        stream.close();
        
        int n;
        for(n=0;n<BUFFER_SIZE;n++)
        {
            if(b[n]!=b2[n])
                break;
        }
        byte[] ret = new byte[n];
        
        System.arraycopy(b,0,ret,0,n);
        return ret;
    }

    public static int getPacketLength(int startPos,URL url) throws Exception
    {
        InputStream stream = url.openStream();
        
        byte[] b = new byte[BUFFER_SIZE];
        
        while(stream.available() < BUFFER_SIZE)
            Thread.yield();
        
        stream.read(b);
        
        return 0;
    }
    /**
     * @param args
     * @throws Exception 
     */
    public static void main(String[] args) throws Exception {
        URL url = new URL("http://localhost:1234");
        int startPos = getHeader(url).length;
        System.out.println(getPacketLength(startPos,url));
    }

}
